BENTLY 3500/92-01-01-00通訊模塊
VMIVME-7740將允許用戶保持當(dāng)前BIOS配置或更改此配置以使其更適合用戶，但此更改只能在初始BIOS引導(dǎo)周期完成后完成。BIOS操作當(dāng)VMIVME-7780通電時(shí)，控制立即跳轉(zhuǎn)到BIOS。BIOS啟動(dòng)開機(jī)自檢（POST）程序，該程序指示微處理器初始化系統(tǒng)內(nèi)存以及系統(tǒng)的其余部分。BIOS通過(guò)初始化其各自的I/O和內(nèi)存地址以及中斷請(qǐng)求線來(lái)建立所有板載設(shè)備的配置。然后，BIOS在主存儲(chǔ)器中建立一個(gè)中斷向量表，用于中斷處理。本手冊(cè)第3章介紹了默認(rèn)中斷向量表和默認(rèn)地址映射。最后，BIOS跳轉(zhuǎn)到硬盤驅(qū)動(dòng)器或軟盤驅(qū)動(dòng)器以執(zhí)行操作系統(tǒng)的引導(dǎo)程序。這是自定義操作系統(tǒng)可以控制板并繼續(xù)自定義配置和/或自定義應(yīng)用程序的點(diǎn)
The VMIVME-7740 will allow the user to either maintain the current BIOS configuration or alter this configuration to be more user specific, but this alteration can only be accomplished after the initial BIOS boot cycle has completed.BIOS Operations When the VMIVME-7740 is powered on, control immediately jumps to the BIOS. The BIOS initiates a Power-on Self-Test (POST) program, which instructs the microprocessor to initialize system memory as well as the rest of the system. The BIOS establishes the configuration of all on-board devices by initializing their respective I/O and Memory addresses and interrupt request lines. The BIOS then builds an interrupt vector table in main memory, which is used for interrupt handling. The default interrupt vector table and the default address map are described in Chapter 3 of this manual. Finally, the BIOS jumps to the hard drive or floppy drive to execute the operating system’s boot program. This is the point at which a custom operating system may take control of the board and proceed with a custom configuration and/or custom application
